Red dots on the skin can be alarming—especially when they appear suddenly or spread without warning. While some causes are harmless, others may signal an underlying health issue. Understanding the difference can help you know when to relax and when to seek medical advice.
Here are 11 common reasons you may be noticing red dots on your skin:
1. Cherry Angiomas
These are tiny, bright-red spots made of clusters of blood vessels. They are extremely common, especially after age 30, and are completely harmless. Cherry angiomas tend to increase with age and usually don’t require treatment.
2. Petechiae
Petechiae are small red or purple dots caused by broken capillaries under the skin. They don’t fade when pressed. Common triggers include intense coughing, vomiting, heavy lifting, or certain medications. If they appear suddenly or in large numbers, medical attention is important.
3. Allergic Reactions
Food, medications, cosmetics, detergents, or insect bites can trigger red dots or rashes. These spots are often itchy and may appear quickly after exposure to an allergen.
4. Heat Rash